Increasing birth weight and gestation time in infants born to HIV infected women.

Preventing prostate cancer. Some preliminary research suggests that some men might benefit from taking zinc along with other vitamins and minerals for preventing prostate cancer. But other research suggests that taking zinc can increase the risk of developing prostate cancer and increase the risk of dying from prostate cancer.

Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).